摘要: 阅读全文
posted @ 2015-02-06 16:07 林本托 阅读(204) 评论(0) 推荐(0)
摘要: It’s relatively common for a try block to be followed by several catch blocks to handle various types of exceptions. If the bodies of several catch bl... 阅读全文
posted @ 2015-02-06 16:04 林本托 阅读(428) 评论(0) 推荐(0)
摘要: java.util.Random 产生确定的值可能被恶意的程序预测到。java.security.SecureRandom 产生不确定的随机数不能被预测到。所以优先使用java.security.SecureRandom类。 阅读全文
posted @ 2015-02-06 14:29 林本托 阅读(2034) 评论(0) 推荐(0)
摘要: 阅读全文
posted @ 2015-02-06 13:27 林本托 阅读(176) 评论(0) 推荐(0)